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【单选题】

(It is) extremely important (for) an engineer (to know) (to use a computer).
A．It is

B．for
C．to know
D．to use a computer
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根据网考网移动考试中心的统计，该试题：

4%的考友选择了A选项

21%的考友选择了B选项

2%的考友选择了C选项

73%的考友选择了D选项

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